package com.itheima.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.mapper.EmpMapper;
import com.itheima.pojo.Emp;
import com.itheima.pojo.PageBean;
import com.itheima.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmpServiceImpl implements EmpService {

    @Autowired
    private EmpMapper empMapper;

    // 分页查询1
    /*@Override
    public PageBean page(Integer page, Integer pageSize) {

        // 1. 获取总记录数
        Long count = empMapper.count();

        // 2. 获取分页查询结果列表
        Integer start = (page - 1) * pageSize;
        List<Emp> empList = empMapper.page(start, pageSize);

        // 3. 封装pageBean对象
        // 方式1：
//        PageBean pageBean = new PageBean();
//        pageBean.setTotal(count);
//        pageBean.setRwo(empList);

        // 方式2：
        PageBean pageBean = new PageBean(count, empList);

        return pageBean;
    }*/

    @Override
    public PageBean page(Integer page, Integer pageSize,String name,
                         Short gender,
                         LocalDate begin,
                         LocalDate end) {
        // 1. 设置分页参数
        PageHelper.startPage(page,pageSize);

        // 2. 执行查询
        List<Emp> empList = empMapper.getList(name, gender, begin, end);
        Page<Emp> p = (Page<Emp>) empList;

        // 3. 封装pageBean对象
        PageBean pageBean = new PageBean(p.getTotal(), p.getResult());
        return pageBean;
    }

    // 批量删除员工
    @Override
    public void batchDeleteEmp(List<Integer> ids) {
        empMapper.deleteEmp(ids);
    }

    // 新增员工
    @Override
    public void save(Emp emp) {

        // 补充基础属性
        emp.setCreateTime(LocalDateTime.now());
        emp.setUpdateTime(LocalDateTime.now());

        empMapper.add(emp);
    }
}
